#include <stdio.h>
#include <unistd.h>

int main()
{
    printf("exec runing...");
    sleep(1);
    //execl("/usr/bin/ls","ls","--color=auto","-a","-l",NULL);
    //execlp("ls","-a","-l","--color=auto",NULL);
    //char* const argv_[] = {"ls","-a","-l","--color=auto",NULL};
    //execv("/usr/bin/ls",argv_);
    //execvp("ls",argv_);
    
    execl("./mybin","mybin",NULL);
    return 0;
}
